If you’d rather not read spoilers on whether a cool mod exists, you’d better stop reading this sentence right now because – SPOILERS – it does. If you’d rather not be spoiled as to the name of that mod, you’d probably be better off not reading the rest of this post, really. Because – SPOILERS – it’s called the Blue Frog mod. It’s for Spelunky, and it turns every character sprite in that game – the player, plants, bats, exploding frogs, the ghost, everything – into the blue frog sprite. That sounds initially dumb, but actually it’s clever and great. If you don’t want spoilers as to why, you definitely shouldn’t read on.